Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:29:17 2012 Optimize a model with 260 rows, 747 columns and 747 nonzeros Model has 518 quadratic constraints Presolve removed 0 rows and 27 columns Presolve time: 3.02s Presolved: 260 rows, 720 columns, 720 nonzeros Variable types: 518 continuous, 202 integer (201 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 129.0000000 - - - 3s 0 0 0.00000 0 3 129.00000 0.00000 100% - 3s 0 0 0.00000 0 2 129.00000 0.00000 100% - 3s 0 0 0.00000 0 88 129.00000 0.00000 100% - 3s 0 2 0.00000 0 168 129.00000 0.00000 100% - 3s * 48 43 30 20.0000000 2.29213 88.5% 34.4 3s H 159 84 19.0000000 2.79450 85.3% 23.2 3s 607 215 8.64220 16 679 19.00000 8.64220 54.5% 31.3 5s * 1144 248 46 18.0000000 9.00000 50.0% 35.0 6s * 1306 175 45 17.0000000 10.45133 38.5% 34.0 6s Explored 1975 nodes (63774 simplex iterations) in 8.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%